package com.hxx.controller;

public class Demo {
    public static void main(String[] args) {
        int[][] arr = new int[3][];
        int[][] arr1 = {{1},{2,3},{4,5,6}};
        arr[0] = new int[1];
        arr[1] = new int[2];
        arr[2] = new int[3];
    }
}


















